Optical disc with a theft deterrent coating
AssigneeWarner Bros. Entertainment Inc.
InventorsWayne M. Smith, Christopher J. Cookson, Lewis S. Ostrover, Alan E. Bell
Life of this patent
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AssigneeWarner Bros. Entertainment Inc.
InventorsWayne M. Smith, Christopher J. Cookson, Lewis S. Ostrover, Alan E. Bell
Estimating the term…
An optical disc used for storing content includes a theft control area selected to render the disc unreadable. The disc must be exposed to radiation of a specific wavelength before it can be read by a regular device. The theft control area may include an area that contains data that instructs the device not to read the disc. This area includes a coating that changes its optical characteristics when exposed to the radiation. The material could be radiochromic or thermochromic. Alternatively, the theft control area includes an RFID device that includes an element that is radiation sensitive. In this embodiment, when the disc is irradiated, the element changes its electrical characteristics.
An optical disc used for data storage comprising:
An optical disc for storing digital content comprising:
A package comprising:
Dependencies are inferred from the claim text.